Wood-shaping machine



N'ovps', 192e.

F. MARTI-:NET

woon SHAPXNG .MACHINE Filed oct. 21 '1925 Patented Nov.. 9, l.

JNFE@ STAIRS ineens I earner y serres- FRDRIC MARTENET, OF VAUSEYON /NEUCI-IATEL, SWITZERLAND.

WooD-sHAPING MAo'HrNE.

Application IedOctober 21, 1&25, Serial No. 63,916, and in Switzerland April 207 1925.

My invention relates to a lwood shaping machine of the kind in which a rod is fed axially between revolving cutters, and the invention consists in arranging'several pairs of roller guides alternately with pairs of cutters, the latter being arranged so as to act on the rod from different diametral positions.

Fig. 1 of the accompanying drawings represents a side view of the arrangement, and

Fig. 2, a plan of the same.,

Fig. 3 is a cross-section on the line 3-3 of Fig. 1 on an enlarged scale, and

Fig. 4, a similar cross-section on the line 4 4. f

The machine is provided with a plurality of spaced roller guides which are arranged in alignment so that they can guide a train of rods 1, 1, 1 through the machine, the rods being admitted to the first roller pair through a rigid guide 2. In the arrangement shown in the drawings, the rollers 3,4, 9, 13 and 14 are feed rollers and are therefore positively rotated, while the rollers 3', 4, 9', 13 and 14 are merely couch rollers which co-operate with the feed rollers and press the rods against the latter. The revolving cutters are arranged in pairs alternately with the roller guides, the shaft of each pair being situated in a plane at right angles to the rods. The angular position of the shafts in the different pairs, however, is varied so that the cutters act on the rod from different diametral positions. In the device shown, one pair of cutter shafts 5, A5

is arranged at right angles to another pair 10, 10. Thus,if round rods are to berproduced out of square ones, the rst pair of cutters remove the corners '8 of the square rods, and theremaining corners 12 are removed by the succeeding pair. The feed and e, 9 rollers 13, 13.

The cutters shown in the drawings are composed of bladesl 6, 6, 11, 11 Awhich are secured to the sides of square blocks?, y7', the latter being keyed to the shafts 5, 5, 10, 10. The cutter blades may be adjusted on the block for rods of different thicknesses, and they may also be exchanged for blades The feed and couchv rollers are alsoa-djustable and exchangeof different shapes.

able.

The cutters are rotated against thetravelling direction of the rods.

I claim:

The combination in a wood shaping mechine wit-h rotatable cutter shafts, the shafts being "arranged so that different pairs of cutters act on the rods from different diametral positions, said cutters having their cuttingv ends tapered in widthto an intermediate re-entlrant curved portion andhaving a bevel cutting edge uniform and eX- tending the full width including the tapered portion.Y

In testimony whereof I aflix my signature.

FREDERIC Maarnlvn'r. 

